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Tribology Transactions | 1966

PR-143—A New Class of High-Temperature Fluids

William Henry Gumprecht

A new class of high-temperature fluids, designated PR-143, which are capable of use in the range of −50 to −700 F, is discussed. These fluorinated materials do not sludge or tar on high-temperature exposure, even in the presence of air. The fluids are being tested in hydraulic systems, as gas turbine engine oils and as base fluids for high-temperature greases (designated PR-240). Properties and test results related to these applications are given. Presented as an American Society of Lubrication Engineers paper at the Lubrication Conference held in San Francisco, Calif., October 18–20, 1965.


Archive | 1996

Process for the manufacture of 1,1,1,2-tetrafluoroethane

William Henry Gumprecht


Archive | 1971

WATER SWOLLEN CELLULOSE DYEING WITH HIGH MOLECULAR WEIGHT DISPERSE DYE IN A GLYCOL ETHER SOLUTION

John A. Blackwell; William Henry Gumprecht; Roy Emerson Starn


Archive | 1968

DECARBONYLATION OF FLUORINATED ACYL FLUORIDES

Bruce Hollis Garth; William Henry Gumprecht


Archive | 1992

Process for the manufacture of pentafluoroethane

Vinci Martinez Felix; William Henry Gumprecht; Barry Asher Mahler


Archive | 1987

Process for the manufacture of 1,1,1- trifluorodichloroethane and 1,1,1,2- tetrafluorochloroethane

William Henry Gumprecht; Leo Ernest Manzer; V. N. Mallikarjuna Rao


Archive | 1988

Liquid phase halogen exchange process for the manufacture of 1,1,1,2-tetrafluoroethane

William Henry Gumprecht


Archive | 1989

Catalyzed hydrofluorination process

William Henry Gumprecht; Wesley Gerald Schindel; Vinci Martinez Felix


Archive | 1972

Process for dyeing water swellable cellulosic materials with polypropylene glycols

John A. Blackwell; William Henry Gumprecht; Jr Roy Emerson Starn


Archive | 1988

Improved process for the manufacture of 1,1,1-trifluorodichloroethane and 1,1,1,2-tetrafluorochloroethane

William Henry Gumprecht; Leo Ernest Manzer; Velliyur Nott Mallikarjuna Rao

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